DfT consults on tougher in-use vehicle emissions laws to curb air quality harm

The Department for Transport has opened a consultation on proposals requiring all road vehicles in Great Britain to maintain emissions control systems to their original approval standards throughout their lifetime. Research cited shows fewer than one in 10 passenger cars tested met official nitrogen oxide limits, with around two thirds of Euro 5 and Euro 6 diesel cars emitting more than three times the permitted level. The government notes road transport remains the UK's largest source of nitrogen oxides and a major contributor to particulate pollution, with petrol and diesel vehicles expected on roads for many years despite the EV transition.

Why it matters: Stricter enforcement of in-use emissions standards may accelerate fleet operators' shift to electric vehicles to avoid compliance costs and legal risks, potentially increasing demand for charging infrastructure. The policy underscores the government's focus on air quality improvements, reinforcing the business case for electrification in commercial and public sector fleets.